Net margin is net profit expressed as a percentage of revenue — the bottom-line efficiency metric. It tells lenders how much profit survives after all costs and taxes. The median U.S. small business net margin runs 7–10% across sectors.
Net margin = (Net Profit / Revenue) × 100. It is the bottom-line summary of business efficiency: how much of every revenue dollar survives after paying COGS, operating expenses, interest, and taxes. For underwriters, net margin benchmarked against industry peers signals whether a business is run efficiently or is cost-bloated. A restaurant at 3% net margin is performing near-median; one at 8% is exceptional; one below 1% is in distress. When a lender stress-tests a DSCR, they apply a revenue decline scenario — low net-margin businesses fail the stress test faster because they have less cushion. Net margin is the link between revenue-based income statements and balance-sheet strength. A business that runs 2% net margin on $2M revenue ($40K net income) is building equity slowly and may struggle to self-fund growth without external financing. A business at 15% net margin on the same revenue ($300K net income) is compounding equity rapidly and needs financing only for step-function investments. The Federal Reserve's Small Business Credit Survey (https://www.fedsmallbusiness.org/survey/2024/report-on-employer-firms) reports profitability data across small-business sectors. The IRS Statistics of Income (https://www.irs.gov/statistics/soi-tax-stats-business-tax-statistics) publishes aggregated net income and margin data by industry using actual tax return data — the most comprehensive source for industry-level margin benchmarks.
The SBA and BLS data suggest median U.S. small business net margins range from roughly 7–10% across sectors. Service businesses run higher (20–40% for professional services). Retail and restaurants run lower (1–5%). Manufacturing and construction run 3–8%. Industry context is essential — a 5% net margin is excellent for a restaurant and weak for a software firm.
Lenders look at both. Gross margin shows production efficiency and debt-service headroom before overhead. Net margin confirms that overhead is sustainable and the business actually retains profit. A high gross margin + low net margin signals cost bloat — lenders will probe operating expense line items.